Device and method for performing authentication in wireless power transmission system

Abstract

A method in a wireless power transfer system can include, in response to a digital ping initiated by a wireless power transmitter, transmitting to the wireless power transmitter during a ping phase, a response signal. The method can further include transmitting, to the wireless power transmitter during a configuration phase, a configuration packet including first control information related to whether a wireless power receiver supports an authentication function to authenticate the wireless power transmitter; receiving, from the wireless power transmitter during a negotiation phase, a capability packet including second control information and a potential power value of the wireless power transmitter; and transmitting, to the wireless power transmitter during a power transfer phase, an authentication request message.

What is claimed is: 
     
       1. A method in a wireless power transfer system, the method performed by a wireless power receiver and comprising:
 in response to a digital ping initiated by a wireless power transmitter, transmitting, to the wireless power transmitter during a ping phase, a response signal; 
 transmitting, to the wireless power transmitter during a configuration phase, a configuration packet including first control information related to whether the wireless power receiver supports an authentication function to authenticate the wireless power transmitter; 
 receiving, from the wireless power transmitter during a negotiation phase, a capability packet including second control information and a potential power value of the wireless power transmitter, wherein the second control information is related to whether the wireless power transmitter supports the authentication function; and 
 receiving power from the wireless power transmitter. 
 
     
     
       2. The method of  claim 1 , wherein the first control information has a length of 1-bit,
 wherein the first control information has a value of ‘0’ for the wireless power receiver not supporting the authentication function, 
 wherein the first control information has a value of ‘1’ for the wireless power receiver supporting the authentication function. 
 
     
     
       3. The method of  claim 2 , wherein the wireless power receiver operates as an authentication initiator, based on the first control information having the value of ‘1’. 
     
     
       4. The method of  claim 1 , wherein the second control information has a length of 1-bit,
 wherein the second control information has a value of ‘0’ for the wireless power transmitter not supporting the authentication function 
 wherein the second control information has a value of ‘1’ for the wireless power transmitter supporting the authentication function. 
 
     
     
       5. The method of  claim 4 , wherein the wireless power transmitter operates as an authentication responder, based on the second control information having the value of ‘1’. 
     
     
       6. A method in a wireless power transfer system, the method performed by a wireless power transmitter and comprising:
 initiating a digital ping, and receiving, from a wireless power receiver during a ping phase, a response signal; 
 receiving, from the wireless power receiver during a configuration phase, a configuration packet including first control information related to whether the wireless power receiver supports an authentication function to authenticate the wireless power transmitter; 
 transmitting, to the wireless power receiver during a negotiation phase, a capability packet including second control information and a potential power value of the wireless power transmitter, wherein the second control information is related to whether the wireless power transmitter supports the authentication function; and 
 transmitting power to the wireless power receiver. 
 
     
     
       7. The method of  claim 6 , wherein the first control information has a length of 1-bit,
 wherein the first control information has a value of ‘0’ for the wireless power receiver not supporting the authentication function, 
 wherein the first control information has a value of ‘1’ for the wireless power receiver supporting the authentication function. 
 
     
     
       8. The method of  claim 7 , wherein the wireless power receiver operates as an authentication initiator, based on the first control information having the value of ‘1’. 
     
     
       9. The method of  claim 6 , wherein the second control information has a length of 1-bit,
 wherein the second control information has a value of ‘0’ for the wireless power transmitter not supporting the authentication function 
 wherein the second control information has a value of ‘1’ for the wireless power transmitter supporting the authentication function. 
 
     
     
       10. The method of  claim 9 , wherein the wireless power transmitter operates as an authentication responder, based on the second control information having the value of ‘1’. 
     
     
       11. A wireless power receiver comprising:
 a power pickup adapted to receive a wireless power from a wireless power transmitter; and 
 a communicator/controller adapted to control the wireless power, 
 wherein the wireless power receiver is adapted to: 
 in response to a digital ping initiated by a wireless power transmitter, transmit, to the wireless power transmitter during a ping phase, a response signal; 
 transmit, to the wireless power transmitter during a configuration phase, a configuration packet including first control information related to whether the wireless power receiver supports an authentication function to authenticate the wireless power transmitter; 
 receive, from the wireless power transmitter during a negotiation phase, a capability packet including second control information and a potential power value of the wireless power transmitter, wherein the second control information is related to whether the wireless power transmitter supports the authentication function; and 
 receive power from the wireless power transmitter. 
 
     
     
       12. The wireless power receiver of  claim 11 , wherein the first control information has a length of 1-bit,
 wherein the first control information has a value of ‘0’ for the wireless power receiver not supporting the authentication function, 
 wherein the first control information has a value of ‘1’ for the wireless power receiver supporting the authentication function. 
 
     
     
       13. The wireless power receiver of  claim 12 , wherein the wireless power receiver operates as an authentication initiator, based on the first control information having the value of ‘1’. 
     
     
       14. The wireless power receiver of  claim 11 , wherein the second control information has a length of 1-bit,
 wherein the second control information has a value of ‘0’ for the wireless power transmitter not supporting the authentication function 
 wherein the second control information has a value of ‘1’ for the wireless power transmitter supporting the authentication function. 
 
     
     
       15. The wireless power receiver of  claim 14 , wherein the wireless power transmitter operates as an authentication responder, based on the second control information having the value of ‘1’. 
     
     
       16. A wireless power transmitter comprising:
 a power pickup adapted to transmit a wireless power to a wireless power receiver; and 
 a communicator/controller adapted to control the wireless power, wherein the wireless power transmitter is adapted to: 
 initiate a digital ping, and receive, from a wireless power receiver during a ping phase, a response signal; 
 receive, from the wireless power receiver during a configuration phase, a configuration packet including first control information related to whether the wireless power receiver supports an authentication function to authenticate the wireless power transmitter; 
 transmit, to the wireless power receiver during a negotiation phase, a capability packet including second control information and a potential power value of the wireless power transmitter, wherein the second control information is related to whether the wireless power transmitter supports the authentication function; and 
 transmit power to the wireless power receiver. 
 
     
     
       17. The wireless power transmitter of  claim 16 , wherein the first control information has a length of 1-bit,
 wherein the first control information has a value of ‘0’ for the wireless power receiver not supporting the authentication function, 
 wherein the first control information has a value of ‘1’ for the wireless power receiver supporting the authentication function. 
 
     
     
       18. The wireless power transmitter of  claim 17 , wherein the wireless power receiver operates as an authentication initiator, based on the first control information having the value of ‘1’. 
     
     
       19. The wireless power transmitter of  claim 16 , wherein the second control information has a length of 1-bit,
 wherein the second control information has a value of ‘0’ for the wireless power transmitter not supporting the authentication function 
 wherein the second control information has a value of ‘1’ for the wireless power transmitter supporting the authentication function. 
 
     
     
       20. The wireless power transmitter of  claim 19 , wherein the wireless power transmitter operates as an authentication responder, based on the second control information having the value of ‘1’.